I’m lost it has to be 3 or 2 or more answers by the way and i will except answers from expert, ace, or genius or anything but begginer or hand

You were told that the amount of time lapsed between consecutive trades on the new york stock exchange followed a normal distribution with a mean of 15 seconds. you were also told that the probability that the time lapsed between two consecutive trades to fall between 16 to 17 seconds was 13%. the probability that the time lapsed between two consecutive trades would fall below 13 seconds was 7%. what is the probability that the time lapsed between two consecutive trades will be between 14 and 15 seconds?

Is it greater than or less than7*3_9*2

The cost of using a service is $0.25 per min. what equation correctly represents the total cost c, in dollars, for d days of use?